Zobrazeno 1 - 10
of 472
pro vyhledávání: '"Lemke, N"'
Autor:
Giarola, R. S., De Almeida, G. H. O., Hungaro, T. H., De Paula, I. R., Godinho, A. F., Acencio, M. L., Mesa, J., Lemke, N., Vieira, L. D., Delicio, H. C
Low-dose ionizing radiation may induce far-reaching consequences in human, especially regarding intrauterine development. Many studies have documented that the risks of in utero irradiation remain controversial and no effect is reported at doses belo
Externí odkaz:
http://arxiv.org/abs/1905.10445
Autor:
Potterveld, D. H., Fromm, S. A., Bailey, K. G., Bishof, M., Booth, D. W., Dietrich, M. R., Greene, J. P., Holt, R. J., Kalita, M. R., Korsch, W., Lemke, N. D., Mueller, P., O'Connor, T. P., Parker, R. H., Rabga, T., Singh, J. T.
Optical trapping techniques are an efficient way to probe limited quantities of rare isotopes. In order to achieve the highest possible measurement precision, it is critical to optimize the optical trapping efficiency. This work presents the developm
Externí odkaz:
http://arxiv.org/abs/1903.07798
Autor:
Parker, R. H., Dietrich, M. R., Kalita, M. R., Lemke, N. D., Bailey, K. G., Bishof, M. N., Greene, J. P., Holt, R. J., Korsch, W., Lu, Z. -T., Mueller, P., O'Connor, T. P., Singh, J. T.
The radioactive radium-225 ($^{225}$Ra) atom is a favorable case to search for a permanent electric dipole moment (EDM). Due to its strong nuclear octupole deformation and large atomic mass, $^{225}$Ra is particularly sensitive to interactions in the
Externí odkaz:
http://arxiv.org/abs/1504.07477
Autor:
Xu, C. -Y., Singh, J., Zappala, J. C., Bailey, K. G., Dietrich, M. R., Greene, J. P., Jiang, W., Lemke, N. D., Lu, Z. -T., Mueller, P., O'Connor, T. P.
Publikováno v:
Phys. Rev. Lett. 113, 033003 (18 July 2014)
We report the first experimental determination of the hyperfine quenching rate of the $6s^2\ ^1\!S_0\ (F=1/2) - 6s6p\ ^3\!P_0\ (F=1/2)$ transition in $^{171}$Yb with nuclear spin $I=1/2$. This rate determines the natural linewidth and the Rabi freque
Externí odkaz:
http://arxiv.org/abs/1406.2340
Autor:
Rey, A. M., Gorshkov, A. V., Kraus, C. V., Martin, M. J., Bishof, M., Swallows, M. D., Zhang, X., Benko, C., Ye, J., Lemke, N. D., Ludlow, A. D.
Publikováno v:
Annals Phys. 340, 311 - 351 (2014)
We present a unifying theoretical framework that describes recently observed many-body effects during the interrogation of an optical lattice clock operated with thousands of fermionic alkaline earth atoms. The framework is based on a many-body maste
Externí odkaz:
http://arxiv.org/abs/1310.5248
Autor:
Hinkley, N., Sherman, J. A., Phillips, N. B., Schioppo, M., Lemke, N. D., Beloy, K., Pizzocaro, M., Oates, C. W., Ludlow, A. D.
Publikováno v:
Science v. 341: 1215-1218, 2013
Atomic clocks have been transformational in science and technology, leading to innovations such as global positioning, advanced communications, and tests of fundamental constant variation. Next-generation optical atomic clocks can extend the capabili
Externí odkaz:
http://arxiv.org/abs/1305.5869
Publikováno v:
Phys. Rev. A, 86(5) 051404 (2012)
The Stark shift of the ytterbium optical clock transition due to room temperature blackbody radiation is dominated by a static Stark effect, which was recently measured to high accuracy [J. A. Sherman et al., Phys. Rev. Lett. 108, 153002 (2012)]. How
Externí odkaz:
http://arxiv.org/abs/1208.0552
Autor:
Fortier, T. M., Nelson, C. W., Hati, A., Quinlan, F., Taylor, J., Jiang, H., Chou, C. W., Rosenband, T., Lemke, N., Ludlow, A., Howe, D., Oates, C. W., Diddams, S. A.
Publikováno v:
Applied Physics Letters 100, 231111 (2012)
We present an optical-electronic approach to generating microwave signals with high spectral purity. By circumventing shot noise and operating near fundamental thermal limits, we demonstrate 10 GHz signals with an absolute timing jitter for a single
Externí odkaz:
http://arxiv.org/abs/1205.1164
Autor:
Sherman, J. A., Lemke, N. D., Hinkley, N., Pizzocaro, M., Fox, R. W., Ludlow, A. D., Oates, C. W.
Publikováno v:
Phys. Rev. Lett. 108, 153002 (2012)
Despite being a canonical example of quantum mechanical perturbation theory, as well as one of the earliest observed spectroscopic shifts, the Stark effect contributes the largest source of uncertainty in a modern optical atomic clock through blackbo
Externí odkaz:
http://arxiv.org/abs/1112.2766
Autor:
Ludlow, A. D., Lemke, N. D., Sherman, J. A., Oates, C. W., Quemener, G., von Stecher, J., Rey, A. M.
Publikováno v:
Phys. Rev. A 84, 052724 (2011)
Recently, p-wave cold collisions were shown to dominate the density-dependent shift of the clock transition frequency in a 171Yb optical lattice clock. Here we demonstrate that by operating such a system at the proper excitation fraction, the cold co
Externí odkaz:
http://arxiv.org/abs/1108.1379